* autoload.cc (WSAIoctl): Reintroduce.
(WSASendMsg): Define. * fhandler.h (class fhandler_socket): Change definition of recv_internal and send_internal to take WSAMSG pointer as parameter. * fhandler_socket.cc (WSAID_WSARECVMSG): Define. (LPFN_WSARECVMSG): Define. (WSASendMsg): Declare. (get_ext_funcptr): New function to fetch address of WSARecvMsg. (fhandler_socket::recv_internal): Take just a LPWSAMSG parameter. Change code accordingly. If control information is requested, fetch address of WSARecvMsg and use that instead of WSARecvFrom. (fhandler_socket::recvfrom): Change return type to ssize_t as declared in fhandler.h. Accommodate changes to recv_internal. (fhandler_socket::recvmsg): Ditto. Make sure that control information is only requested if system, address family, and socket type support it. (fhandler_socket::send_internal): Take just a LPWSAMSG parameter and the flags. Change code accordingly. If control information is provided, use WSASendMsg instead of WSASendTo. (fhandler_socket::sendto): Drop useless comment. Accommodate changes to send_internal. (fhandler_socket::sendmsg): Ditto. Make sure that control information is only provided if system, address family, and socket type support it. * wincap.h (wincaps::has_recvmsg): New element. (wincaps::has_sendmsg): New element * wincap.cc: Implement above elements throughout. * include/cygwin/socket.h (CMSG_ALIGN): Phrase in terms of alignment of type struct cmsghdr.
This commit is contained in:
Corinna Vinschen
parent
2e287a6327
commit
3787b37ef2
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@ -1,3 +1,33 @@
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2009-01-20 Corinna Vinschen <corinna@vinschen.de>
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* autoload.cc (WSAIoctl): Reintroduce.
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(WSASendMsg): Define.
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* fhandler.h (class fhandler_socket): Change definition of recv_internal
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and send_internal to take WSAMSG pointer as parameter.
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* fhandler_socket.cc (WSAID_WSARECVMSG): Define.
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(LPFN_WSARECVMSG): Define.
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(WSASendMsg): Declare.
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(get_ext_funcptr): New function to fetch address of WSARecvMsg.
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(fhandler_socket::recv_internal): Take just a LPWSAMSG parameter.
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Change code accordingly. If control information is requested,
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fetch address of WSARecvMsg and use that instead of WSARecvFrom.
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(fhandler_socket::recvfrom): Change return type to ssize_t as
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declared in fhandler.h. Accommodate changes to recv_internal.
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(fhandler_socket::recvmsg): Ditto. Make sure that control information
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is only requested if system, address family, and socket type support it.
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(fhandler_socket::send_internal): Take just a LPWSAMSG parameter
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and the flags. Change code accordingly. If control information is
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provided, use WSASendMsg instead of WSASendTo.
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(fhandler_socket::sendto): Drop useless comment. Accommodate changes
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to send_internal.
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(fhandler_socket::sendmsg): Ditto. Make sure that control information
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is only provided if system, address family, and socket type support it.
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* wincap.h (wincaps::has_recvmsg): New element.
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(wincaps::has_sendmsg): New element
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* wincap.cc: Implement above elements throughout.
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* include/cygwin/socket.h (CMSG_ALIGN): Phrase in terms of alignment
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of type struct cmsghdr.
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2009-01-17 Corinna Vinschen <corinna@vinschen.de>
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* mmap.cc (mmap64): Fix condition checking if anonymous mapping beyond
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@ -389,7 +389,9 @@ LoadDLLfunc (WSAAsyncSelect, 16, ws2_32)
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LoadDLLfunc (WSAEnumNetworkEvents, 12, ws2_32)
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LoadDLLfunc (WSAEventSelect, 12, ws2_32)
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LoadDLLfunc (WSAGetLastError, 0, ws2_32)
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LoadDLLfunc (WSAIoctl, 36, ws2_32)
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LoadDLLfunc (WSARecvFrom, 36, ws2_32)
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LoadDLLfunc (WSASendMsg, 24, ws2_32)
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LoadDLLfunc (WSASendTo, 36, ws2_32)
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LoadDLLfunc (WSASetLastError, 4, ws2_32)
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// LoadDLLfunc (WSAStartup, 8, ws2_32)
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@ -483,16 +483,13 @@ class fhandler_socket: public fhandler_base
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int open (int flags, mode_t mode = 0);
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ssize_t readv (const struct iovec *, int iovcnt, ssize_t tot = -1);
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inline ssize_t recv_internal (struct _WSABUF *wsabuf, DWORD wsacnt,
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DWORD flags,
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struct sockaddr *from, int *fromlen);
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inline ssize_t recv_internal (struct _WSAMSG *wsamsg);
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ssize_t recvfrom (void *ptr, size_t len, int flags,
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struct sockaddr *from, int *fromlen);
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ssize_t recvmsg (struct msghdr *msg, int flags);
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ssize_t writev (const struct iovec *, int iovcnt, ssize_t tot = -1);
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inline ssize_t send_internal (struct _WSABUF *wsabuf, DWORD wsacnt, int flags,
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const struct sockaddr *to, int tolen);
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inline ssize_t send_internal (struct _WSAMSG *wsamsg, int flags);
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ssize_t sendto (const void *ptr, size_t len, int flags,
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const struct sockaddr *to, int tolen);
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ssize_t sendmsg (const struct msghdr *msg, int flags);
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@ -19,6 +19,7 @@
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#include <stdlib.h>
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#define USE_SYS_TYPES_FD_SET
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#include <winsock2.h>
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#include <mswsock.h>
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#include <iphlpapi.h>
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#include "cygerrno.h"
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#include "security.h"
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@ -1277,16 +1278,52 @@ fhandler_socket::readv (const struct iovec *const iov, const int iovcnt,
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return recvmsg (&msg, 0);
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}
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extern "C" {
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#define WSAID_WSARECVMSG \
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{0xf689d7c8,0x6f1f,0x436b,{0x8a,0x53,0xe5,0x4f,0xe3,0x51,0xc3,0x22}};
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typedef int (WSAAPI *LPFN_WSARECVMSG)(SOCKET,LPWSAMSG,LPDWORD,LPWSAOVERLAPPED,
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LPWSAOVERLAPPED_COMPLETION_ROUTINE);
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int WSAAPI WSASendMsg(SOCKET,LPWSAMSG,DWORD,LPDWORD, LPWSAOVERLAPPED,
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LPWSAOVERLAPPED_COMPLETION_ROUTINE);
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};
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/* There's no DLL which exports the symbol WSARecvMsg. One has to call
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WSAIoctl as below to fetch the function pointer. Why on earth did the
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MS developers decide not to export a normal symbol for these extension
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functions? */
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inline int
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get_ext_funcptr (SOCKET sock, void *funcptr)
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{
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DWORD bret;
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const GUID guid = WSAID_WSARECVMSG;
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return WSAIoctl (sock, SIO_GET_EXTENSION_FUNCTION_POINTER,
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(void *) &guid, sizeof (GUID), funcptr, sizeof (void *),
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&bret, NULL, NULL);
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}
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inline ssize_t
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fhandler_socket::recv_internal (WSABUF *wsabuf, DWORD wsacnt, DWORD flags,
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struct sockaddr *from, int *fromlen)
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fhandler_socket::recv_internal (LPWSAMSG wsamsg)
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{
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ssize_t res = 0;
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DWORD ret = 0, wret;
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int evt_mask = FD_READ | ((flags & MSG_OOB) ? FD_OOB : 0);
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int evt_mask = FD_READ | ((wsamsg->dwFlags & MSG_OOB) ? FD_OOB : 0);
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LPWSABUF wsabuf = wsamsg->lpBuffers;
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ULONG wsacnt = wsamsg->dwBufferCount;
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bool use_recvmsg = false;
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static LPFN_WSARECVMSG WSARecvMsg;
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bool waitall = (flags & MSG_WAITALL);
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flags &= (MSG_OOB | MSG_PEEK | MSG_DONTROUTE);
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bool waitall = (wsamsg->dwFlags & MSG_WAITALL);
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wsamsg->dwFlags &= (MSG_OOB | MSG_PEEK | MSG_DONTROUTE);
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if (wsamsg->Control.len > 0)
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{
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if (!WSARecvMsg
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&& get_ext_funcptr (get_socket (), &WSARecvMsg) == SOCKET_ERROR)
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{
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set_winsock_errno ();
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return SOCKET_ERROR;
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}
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use_recvmsg = true;
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}
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if (waitall)
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{
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if (get_socket_type () != SOCK_STREAM)
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@ -1295,7 +1332,7 @@ fhandler_socket::recv_internal (WSABUF *wsabuf, DWORD wsacnt, DWORD flags,
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set_winsock_errno ();
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return SOCKET_ERROR;
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}
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if (is_nonblocking () || (flags & (MSG_OOB | MSG_PEEK)))
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if (is_nonblocking () || (wsamsg->dwFlags & (MSG_OOB | MSG_PEEK)))
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waitall = false;
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}
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@ -1305,8 +1342,12 @@ fhandler_socket::recv_internal (WSABUF *wsabuf, DWORD wsacnt, DWORD flags,
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while (!(res = wait_for_events (evt_mask | FD_CLOSE))
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|| saw_shutdown_read ())
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{
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res = WSARecvFrom (get_socket (), wsabuf, wsacnt, &wret,
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&flags, from, fromlen, NULL, NULL);
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if (use_recvmsg)
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res = WSARecvMsg (get_socket (), wsamsg, &wret, NULL, NULL);
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else
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res = WSARecvFrom (get_socket (), wsabuf, wsacnt, &wret,
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&wsamsg->dwFlags, wsamsg->name, &wsamsg->namelen,
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NULL, NULL);
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if (!res)
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{
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ret += wret;
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@ -1353,32 +1394,34 @@ fhandler_socket::recv_internal (WSABUF *wsabuf, DWORD wsacnt, DWORD flags,
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return ret;
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}
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int
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ssize_t
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fhandler_socket::recvfrom (void *ptr, size_t len, int flags,
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struct sockaddr *from, int *fromlen)
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{
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WSABUF wsabuf = { len, (char *) ptr };
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return recv_internal (&wsabuf, 1, flags, from, fromlen);
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WSAMSG wsamsg = { from, from && fromlen ? *fromlen : 0,
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&wsabuf, 1,
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{ 0, NULL},
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flags };
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ssize_t ret = recv_internal (&wsamsg);
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if (fromlen)
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*fromlen = wsamsg.namelen;
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return ret;
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}
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int
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ssize_t
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fhandler_socket::recvmsg (struct msghdr *msg, int flags)
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{
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if (CYGWIN_VERSION_CHECK_FOR_USING_ANCIENT_MSGHDR)
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((struct OLD_msghdr *) msg)->msg_accrightslen = 0;
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else
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/* TODO: Descriptor passing on AF_LOCAL sockets. */
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/* Disappointing but true: Even if WSARecvMsg is supported, it's only
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supported for datagram and raw sockets. */
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if (!wincap.has_recvmsg () || get_socket_type () == SOCK_STREAM
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|| get_addr_family () == AF_LOCAL)
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{
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msg->msg_controllen = 0;
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msg->msg_flags = 0;
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}
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if (get_addr_family () == AF_LOCAL)
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{
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/* On AF_LOCAL sockets the (fixed-size) name of the shared memory
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area used for descriptor passing is transmitted first.
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If this string is empty, no descriptors are passed and we can
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go ahead recv'ing the normal data blocks. Otherwise start
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special handling for descriptor passing. */
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/*TODO*/
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if (!CYGWIN_VERSION_CHECK_FOR_USING_ANCIENT_MSGHDR)
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msg->msg_flags = 0;
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}
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WSABUF wsabuf[msg->msg_iovlen];
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@ -1389,11 +1432,19 @@ fhandler_socket::recvmsg (struct msghdr *msg, int flags)
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wsaptr->len = (--iovptr)->iov_len;
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wsaptr->buf = (char *) iovptr->iov_base;
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}
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struct sockaddr *from = (struct sockaddr *) msg->msg_name;
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int *fromlen = from ? &msg->msg_namelen : NULL;
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return recv_internal (wsabuf, msg->msg_iovlen, flags, from, fromlen);
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WSAMSG wsamsg = { (struct sockaddr *) msg->msg_name, msg->msg_namelen,
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wsabuf, msg->msg_iovlen,
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{ msg->msg_controllen, (char *) msg->msg_control },
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flags };
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ssize_t ret = recv_internal (&wsamsg);
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if (ret >= 0)
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{
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msg->msg_namelen = wsamsg.namelen;
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msg->msg_controllen = wsamsg.Control.len;
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if (!CYGWIN_VERSION_CHECK_FOR_USING_ANCIENT_MSGHDR)
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msg->msg_flags = wsamsg.dwFlags;
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}
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return ret;
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}
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int
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@ -1415,26 +1466,35 @@ fhandler_socket::writev (const struct iovec *const iov, const int iovcnt,
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}
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inline ssize_t
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fhandler_socket::send_internal (struct _WSABUF *wsabuf, DWORD wsacnt, int flags,
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const struct sockaddr *to, int tolen)
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fhandler_socket::send_internal (struct _WSAMSG *wsamsg, int flags)
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{
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int res = 0;
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DWORD ret = 0, err = 0, sum = 0, off = 0;
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WSABUF buf;
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bool use_sendmsg = false;
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for (DWORD i = 0; i < wsacnt; off >= wsabuf[i].len && (++i, off = 0))
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if (wsamsg->Control.len > 0)
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use_sendmsg = true;
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for (DWORD i = 0; i < wsamsg->dwBufferCount;
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off >= wsamsg->lpBuffers[i].len && (++i, off = 0))
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{
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buf.buf = wsabuf[i].buf + off;
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buf.len = wsabuf[i].len - off;
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buf.buf = wsamsg->lpBuffers[i].buf + off;
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buf.len = wsamsg->lpBuffers[i].len - off;
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if (buf.len > 65536) /* See KB 823764 */
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buf.len = 65536;
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do
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{
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if ((res = WSASendTo (get_socket (), &buf, 1, &ret,
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flags & (MSG_OOB | MSG_DONTROUTE), to, tolen,
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NULL, NULL))
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&& (err = WSAGetLastError ()) == WSAEWOULDBLOCK)
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if (use_sendmsg)
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res = WSASendMsg (get_socket (), wsamsg,
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flags & (MSG_OOB | MSG_DONTROUTE), &ret,
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NULL, NULL);
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else
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res = WSASendTo (get_socket (), &buf, 1, &ret,
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flags & (MSG_OOB | MSG_DONTROUTE),
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wsamsg->name, wsamsg->namelen,
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NULL, NULL);
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if (res && (err = WSAGetLastError ()) == WSAEWOULDBLOCK)
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{
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LOCK_EVENTS;
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wsock_events->events &= ~FD_WRITE;
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@ -1467,7 +1527,7 @@ fhandler_socket::send_internal (struct _WSABUF *wsabuf, DWORD wsacnt, int flags,
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if (get_errno () == ESHUTDOWN && get_socket_type () == SOCK_STREAM)
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{
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set_errno (EPIPE);
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if (! (flags & MSG_NOSIGNAL))
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if (!(flags & MSG_NOSIGNAL))
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raise (SIGPIPE);
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}
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}
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@ -1484,28 +1544,18 @@ fhandler_socket::sendto (const void *ptr, size_t len, int flags,
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if (to && !get_inet_addr (to, tolen, &sst, &tolen))
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return SOCKET_ERROR;
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/* Never write more than 64K at once to workaround a problem with
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Winsock, which creates a temporary buffer with the total incoming
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buffer size and copies the whole content over, regardless of
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the size of the internal send buffer. A buffer full condition
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is only recognized in subsequent calls and, if len is big enough,
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the call even might fail with an out-of-memory condition. */
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WSABUF wsabuf = { len, (char *) ptr };
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return send_internal (&wsabuf, 1, flags,
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(to ? (const struct sockaddr *) &sst : NULL), tolen);
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WSAMSG wsamsg = { to ? (struct sockaddr *) &sst : NULL, tolen,
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&wsabuf, 1,
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{ 0, NULL},
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0 };
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return send_internal (&wsamsg, flags);
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}
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int
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fhandler_socket::sendmsg (const struct msghdr *msg, int flags)
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{
|
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if (get_addr_family () == AF_LOCAL)
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{
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/* For AF_LOCAL/AF_UNIX sockets, if descriptors are given, start
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||||
the special handling for descriptor passing. Otherwise just
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transmit an empty string to tell the receiver that no
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descriptor passing is done. */
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/*TODO*/
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}
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/* TODO: Descriptor passing on AF_LOCAL sockets. */
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WSABUF wsabuf[msg->msg_iovlen];
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WSABUF *wsaptr = wsabuf;
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|
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@ -1515,9 +1565,17 @@ fhandler_socket::sendmsg (const struct msghdr *msg, int flags)
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wsaptr->len = iovptr->iov_len;
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(wsaptr++)->buf = (char *) (iovptr++)->iov_base;
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}
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return send_internal (wsabuf, msg->msg_iovlen, flags,
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(struct sockaddr *) msg->msg_name, msg->msg_namelen);
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WSAMSG wsamsg = { (struct sockaddr *) msg->msg_name, msg->msg_namelen,
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wsabuf, msg->msg_iovlen,
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/* Disappointing but true: Even if WSASendMsg is
|
||||
supported, it's only supported for datagram and
|
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raw sockets. */
|
||||
{ !wincap.has_sendmsg ()
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|| get_socket_type () == SOCK_STREAM
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|| get_addr_family () == AF_LOCAL
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? 0 : msg->msg_controllen, (char *) msg->msg_control },
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0 };
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return send_internal (&wsamsg, flags);
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}
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int
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|
|
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|
|
@ -80,7 +80,8 @@ struct cmsghdr
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|||
};
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||||
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#define CMSG_ALIGN(len) \
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(((len) + sizeof (size_t) - 1) & ~(sizeof (size_t) - 1))
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(((len) + __alignof__ (struct cmsghdr) - 1) \
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||||
& ~(__alignof__ (struct cmsghdr) - 1))
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||||
#define CMSG_LEN(len) \
|
||||
(CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
|
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#define CMSG_SPACE(len) \
|
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|
|
|
|||
|
|
@ -51,6 +51,8 @@ wincaps wincap_unknown __attribute__((section (".cygwin_dll_common"), shared)) =
|
|||
has_restricted_stack_args:false,
|
||||
has_transactions:false,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:false,
|
||||
has_sendmsg:false,
|
||||
};
|
||||
|
||||
wincaps wincap_nt4 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
||||
|
|
@ -84,6 +86,8 @@ wincaps wincap_nt4 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
|||
has_restricted_stack_args:false,
|
||||
has_transactions:false,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:false,
|
||||
has_sendmsg:false,
|
||||
};
|
||||
|
||||
wincaps wincap_nt4sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
||||
|
|
@ -117,6 +121,8 @@ wincaps wincap_nt4sp4 __attribute__((section (".cygwin_dll_common"), shared)) =
|
|||
has_restricted_stack_args:false,
|
||||
has_transactions:false,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:false,
|
||||
has_sendmsg:false,
|
||||
};
|
||||
|
||||
wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
||||
|
|
@ -150,6 +156,8 @@ wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
|||
has_restricted_stack_args:false,
|
||||
has_transactions:false,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:false,
|
||||
has_sendmsg:false,
|
||||
};
|
||||
|
||||
wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
||||
|
|
@ -183,6 +191,8 @@ wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) =
|
|||
has_restricted_stack_args:false,
|
||||
has_transactions:false,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:false,
|
||||
has_sendmsg:false,
|
||||
};
|
||||
|
||||
wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
|
||||
|
|
@ -216,6 +226,8 @@ wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
|
|||
has_restricted_stack_args:false,
|
||||
has_transactions:false,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:true,
|
||||
has_sendmsg:false,
|
||||
};
|
||||
|
||||
wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
||||
|
|
@ -249,6 +261,8 @@ wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
|||
has_restricted_stack_args:false,
|
||||
has_transactions:false,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:true,
|
||||
has_sendmsg:false,
|
||||
};
|
||||
|
||||
wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
||||
|
|
@ -282,6 +296,8 @@ wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
|||
has_restricted_stack_args:false,
|
||||
has_transactions:false,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:true,
|
||||
has_sendmsg:false,
|
||||
};
|
||||
|
||||
wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
||||
|
|
@ -315,6 +331,8 @@ wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
|
|||
has_restricted_stack_args:true,
|
||||
has_transactions:false,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:true,
|
||||
has_sendmsg:false,
|
||||
};
|
||||
|
||||
wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
|
||||
|
|
@ -348,6 +366,8 @@ wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
|
|||
has_restricted_stack_args:false,
|
||||
has_transactions:true,
|
||||
ts_has_dep_problem:false,
|
||||
has_recvmsg:true,
|
||||
has_sendmsg:true,
|
||||
};
|
||||
|
||||
wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
|
||||
|
|
|
|||
|
|
@ -43,6 +43,8 @@ struct wincaps
|
|||
unsigned has_restricted_stack_args : 1;
|
||||
unsigned has_transactions : 1;
|
||||
unsigned ts_has_dep_problem : 1;
|
||||
unsigned has_recvmsg : 1;
|
||||
unsigned has_sendmsg : 1;
|
||||
};
|
||||
|
||||
class wincapc
|
||||
|
|
@ -92,6 +94,8 @@ public:
|
|||
bool IMPLEMENT (has_restricted_stack_args)
|
||||
bool IMPLEMENT (has_transactions)
|
||||
bool IMPLEMENT (ts_has_dep_problem)
|
||||
bool IMPLEMENT (has_recvmsg)
|
||||
bool IMPLEMENT (has_sendmsg)
|
||||
|
||||
#undef IMPLEMENT
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue